Model comparison
Seed 2.0 Pro vs GPT-5.4 nano
Seed 2.0 Pro is the stronger model overall, scoring 43.2 to 41.9 on the Noometry Index. GPT-5.4 nano costs 2.4× less per token, which makes it the better buy when Seed 2.0 Pro's lead doesn't matter for your workload.
Last verified . 18 shared benchmarks.
ByteDance SeedSummary
- They share 18 benchmarks with published results for both. Seed 2.0 Pro scores higher in 6 categories and GPT-5.4 nano in 3 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Seed 2.0 Pro leads 62.9 to 55.7.
- GPT-5.4 nano is cheaper at $0.20 / $1.25 per million input/output tokens, against $0.50 / $3 for Seed 2.0 Pro.
- GPT-5.4 nano accepts more context: 400K tokens versus 256K.
Side by side
| Seed 2.0 Pro | GPT-5.4 nano | |
|---|---|---|
| Provider | ByteDance Seed | OpenAI |
| Noometry Index | 43.2 | 41.9 |
| Released | 2026-02-14 | 2026-03-17 |
| Weights | Proprietary | Proprietary |
| Context window | 256K | 400K |
| Max output | 128K | 128K |
| Input $ / M tokens | $0.50 | $0.20 |
| Output $ / M tokens | $3 | $1.25 |
| Results tracked | 20 | 40 |
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Category by category
Coding Too close to call
Seed 2.0 Pro: 43.5 (#86), GPT-5.4 nano: 43.6 (#84)
| Benchmark | Seed 2.0 Pro | GPT-5.4 nano |
|---|---|---|
| LMArena Coding | 1472 | 1405 |
| SciCode | — | 46.9% |
| WeirdML | — | 49.2% |
| ALE-Bench | — | 1,005 |
Reasoning Too close to call
Seed 2.0 Pro: 24.1 (#165), GPT-5.4 nano: 23.7 (#173)
| Benchmark | Seed 2.0 Pro | GPT-5.4 nano |
|---|---|---|
| LMArena Hard Prompts | 1453 | 1381 |
| ARC-AGI-2 | — | 5.7% |
| Kagi LLM Benchmark | — | 39.7% |
| NYT Connections (extended) | 28.4% | — |
| ARC-AGI-1 | — | 51.5% |
| CritPt | — | 9.3% |
| Chess Puzzles | — | 30% |
| Thematic Generalization | 57.1% | — |
| Mystery Game Puzzles | — | 9% |
| DTBench | — | 80.3% |
| LMCA | — | 36.9% |
| Epoch Capabilities Index | — | 145.81 |
| ForecastBench | — | 57.3 |
Math GPT-5.4 nano leads
Seed 2.0 Pro: 39.3 (#108), GPT-5.4 nano: 40.9 (#88)
| Benchmark | Seed 2.0 Pro | GPT-5.4 nano |
|---|---|---|
| LMArena Math | 1439 | 1406 |
| FrontierMath (Tiers 1-3) | — | 44.9% |
| FrontierMath Tier 4 | — | 12.2% |
| OTIS Mock AIME 2024-2025 | — | 87.8% |
| ProofBench | — | 5% |
| FrontierMath (Feb 2025 set) | — | 25.9% |
| FrontierMath Tier 4 (v1) | — | 6.3% |
Knowledge GPT-5.4 nano leads
Seed 2.0 Pro: 40.2 (#122), GPT-5.4 nano: 41.9 (#103)
| Benchmark | Seed 2.0 Pro | GPT-5.4 nano |
|---|---|---|
| LMArena Expert | 1440 | 1396 |
| GPQA Diamond | — | 78.5% |
| SimpleQA Verified | — | 11.7% |
| Vectara Hallucination Rate | — | 3.1% |
Multimodal Seed 2.0 Pro leads
Seed 2.0 Pro: 41.5 (#35), GPT-5.4 nano: 36.7 (#78)
| Benchmark | Seed 2.0 Pro | GPT-5.4 nano |
|---|---|---|
| LMArena Vision | 1274 | 1196 |
Multilingual Seed 2.0 Pro leads
Seed 2.0 Pro: 54.5 (#39), GPT-5.4 nano: 48.6 (#140)
| Benchmark | Seed 2.0 Pro | GPT-5.4 nano |
|---|---|---|
| LMArena Non-English | 1441 | 1359 |
| LMArena Chinese | 1489 | 1392 |
| LMArena French | 1471 | 1396 |
| LMArena German | 1442 | 1367 |
| LMArena Japanese | 1408 | 1343 |
| LMArena Korean | 1411 | 1320 |
| LMArena Russian | 1449 | 1363 |
| LMArena Spanish | 1460 | 1371 |
Instruction Following Seed 2.0 Pro leads
Seed 2.0 Pro: 74.5 (#91), GPT-5.4 nano: 71.9 (#144)
| Benchmark | Seed 2.0 Pro | GPT-5.4 nano |
|---|---|---|
| LMArena Instruction Following | 1414 | 1362 |
Long Context Seed 2.0 Pro leads
Seed 2.0 Pro: 43.6 (#90), GPT-5.4 nano: 41.6 (#137)
| Benchmark | Seed 2.0 Pro | GPT-5.4 nano |
|---|---|---|
| LMArena Longer Query | 1428 | 1366 |
Writing & Preference Seed 2.0 Pro leads
Seed 2.0 Pro: 62.9 (#69), GPT-5.4 nano: 55.7 (#142)
| Benchmark | Seed 2.0 Pro | GPT-5.4 nano |
|---|---|---|
| LMArena Text | 1448 | 1372 |
| LMArena Creative Writing | 1406 | 1314 |
| LMArena Multi-Turn | 1441 | 1382 |
Frequently asked questions
Is Seed 2.0 Pro better than GPT-5.4 nano?
Seed 2.0 Pro is the stronger model overall, scoring 43.2 to 41.9 on the Noometry Index. GPT-5.4 nano costs 2.4× less per token, which makes it the better buy when Seed 2.0 Pro's lead doesn't matter for your workload.
Which is cheaper, Seed 2.0 Pro or GPT-5.4 nano?
GPT-5.4 nano is cheaper. It lists at $0.20 per million input tokens and $1.25 per million output tokens; Seed 2.0 Pro lists at $0.50 and $3.
Is Seed 2.0 Pro or GPT-5.4 nano better for coding?
They score almost the same on coding (43.5 vs 43.6); test both on your own repository before choosing.
Which has the bigger context window?
GPT-5.4 nano does, with 400K tokens against 256K.
How many benchmarks do Seed 2.0 Pro and GPT-5.4 nano share?
18 benchmarks have published results for both models. Seed 2.0 Pro has 20 scored results on Noometry and GPT-5.4 nano has 40.